Clarifying measurements

[df cardwell]

Patrick

A colonoscopy ? Really ? Did you use one of those Home Depot Do-It-Yourself-Kits,
or hire it done ? I've seen plans somewhere online for a homemade endoscope kit,
using a garden hose and a surplus metrogon. Although, the way things are headed around APUG,
someone is liable to try it with an old Petzval instead. (I won't suggest a Rectagon.)

Anyway, I hope you're flushed with success and back to normal soon.

d

 

[Kirk Keyes]

I hear a few tablespoons of borax in a glass of warm water will make the (fill in the blank) run free!

(That was sarcasm there - do not ingest borax.)

 

[gainer]

The stuff in that Bowel Prep Kit (quite a euphemism, that) made it run free alright. 2 pills of bisacodyl and 2 liters of orange flavored PEG-3350 (polyethyl glycol) with NaCl, KCl and NaHCO3 did the trick up till 3 AM then left fot hospital at 8 AM. Various needle sticks by a nurse trainee who finally found a vein, then out like a light for ?? minutes. Once they get that IV in you, there's no telling what they put in it. Instructions were not to drive or make important decisions for 24 hours. Good thing I had decided whom to vote for long before.
Aint life fun?

 

[Cor]

Patrick;

I used a monohydrate as a simple example, not as a factual representation. It was meant as a single hydrate counterpoint to a multi hydrate salt in that example.

In fact, Sodium Sulfite Heptahydrate, Na2SO3.7H2O is unstable and rapidly decomposes into Sodium Sulfate, Na2SO4. Even the anhydrous salt is only about 97% pure. My handbook does allude to a monohydrate but gives no example nor any other information. I assume it to be unstable as well.

Basically, I think you should re-read the OP.

PE

Hi PE,

I am absolutely sure you know this, but perhaps it doesn't hurt to mention it again in this thread: when using Sodiumsulphite in photo chemistry (and who can "live' without it..;-)..) be sure to buy and use only the anhydrous form, since, as you said any hydrated form will (partly) decompose into SoduimSulphate. As I understand the presence of the Sulphate does not hurt, the absence or reduction of Sulphite can..

Best,

Cor

 

[gainer]

Thus anhydrous sulfite dissolved in water takes the dissolved oxygen that keeps fish alive and becomes the sulphate? Maybe that's why we call it an antioxidant. I learned how to get along without it in developers for B&W in 1994.

 

[Kirk Keyes]

Thus anhydrous sulfite dissolved in water takes the dissolved oxygen that keeps fish alive and becomes the sulphate? Maybe that's why we call it an antioxidant.

That's exactly right!

 

[Photo Engineer]

It has other uses as well. It is a mild silver halide solvent and therefore impacts on grain and sharpness, and it also reacts with the oxidation products of HQ to remove them and help shift the equillibrium of the development reaction to the right.

PE

 

[gainer]

Of course ascorbates also are good antioxidants that are said to act in a different manner. This is a different subject, but so was the state of my bowels, so I think this is a good time for me to go somewhere else. Cheers.